Summary
The FAA proposes to adopt a new airworthiness directive (AD) for certain Leonardo S.p.a. (Leonardo) Model AB139 and AW139 helicopters. This proposed AD would require removing certain engine mounting rods from service and prohibit their installation on any helicopter. This proposed AD was prompted by a report of non-conforming engine mounting rods. The actions of this proposed AD are intended to address an unsafe condition on these products.